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1998 3800 Camaro idle vs MAF
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shadetreeJack
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Jun 14, 2009, 6:28 PM
Post #1 of 2
(2172 views)
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1998 3800 Camaro idle vs MAF
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When idling, the rpms fluctuate up and down so bad it stalls. you can 'two foot' it and get going - sets codes that are for too rich AND too lean. I replaced the catalytic converter because the old one was bad. If I unplug the MAF, it idles OK, a little high, sets MAF code of course. Can't help but think this will lead to other problems. I would prefer no code AND a stable idle. A fellow engineer from GM, the engine guy on our team was helping me. He said to drive up to 35 mph and coast down so the ecm could relearn. I have done this and it only helps temporarily.
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autojoe
User
Jun 14, 2009, 8:25 PM
Post #2 of 2
(2167 views)
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Re: 1998 3800 Camaro idle vs MAF
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erratic idle and erratic gps grams per second on scan tool usually indicate bad MAF.Try cleaning MAF first.A labscope or scan tool needed at least a scan tool to look to see what MAF is telling PCM.
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